The Capsule mod allows you to store and carry around regions of blocks in one item. You can then open and close this capsule anywhere.
Download the Capsule Mod for 1.8:
Capsule Mod for 1.8
Forge for 1.8
Installation:
Locate your Minecraft.jar file.
If you haven’t already installed Forge, drag the files from the forge zip file into Minecraft.jar.
Run Minecraft once
Drag the mod to the .minecraft/mods...